- Group 4 (HLA-A31 positive): Patients receive tyrosinase related protein-1. Each peptide vaccine is separately emulsified in Montanide ISA-51 and administered subcutaneously into the thigh. Patients are treated with peptide vaccine alone or combined with 1 of 3 possible adjuvants (interleukin-2 (IL-2) IV, IL-2 delayed IV, or sargramostim (GM-CSF) SQ) depending on the time of entry into study and response to treatment.